Sangoma Technologies CG/MG family driver cg6kwin2k.sys vulnerable to insufficient access control on its IOCTL

Overview CG/MG family driver cg6kwin2k.sys provided by Sangoma Technologies is vulnerable to insufficient access control on its IOCTL CWE-782. Takahiro Haruyama of Broadcom Carbon Black reported this vulnerability to JPCERT/CC. JPCERT/CC coordinated with the developer. Impact By sending a specifi...